A total of 48 entries have been confirmed for the full 2025 WeatherTech Championship season, with 56 entries slated to compete in the five Michelin Endurance Cup rounds.
Those numbers are headed by 11-full-season GTP entries, plus two more for the endurance rounds. In addition, January’s season-opening Rolex 24 At Daytona is expected to have a field in excess of 60 cars when the entry list for that event is revealed in early December.
“The golden era of IMSA sports car racing is right now, as evidenced by yet another incredibly strong and competitive entry list for the 2025 WeatherTech Championship and Michelin Endurance Cup season,” said IMSA President John Doonan in his State of the Sport address leading into this weekend’s season-ending Motul Petit Le Mans at Michelin Raceway Road Atlanta.
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“Our top GTP category keeps growing, while we continue to see strong representation across the LMP2, GTD PRO and GTD classes. We are immensely proud of the teams for confirming their plans so soon and grateful to all of our stakeholders for continuing to provide IMSA fans with the best sports car racing anywhere.”
IMSA’s top category sees an uptick for the third consecutive year, with a total of 11 full-season entries and two additional teams committed for the Michelin Endurance Cup events.
Porsche Penske Motorsport, Cadillac Wayne Taylor Racing V-Series.R, BMW M Team RLL and the returning Acura Meyer Shank Racing w/ Curb Agajanian will be back with two entries apiece. Single, full-season entries are planned from Whelen Cadillac Racing, JDC-Miller MotorSports and the Heart of Racing Team. Proton Competition and Lamborghini Iron Lynx are in for the Michelin Endurance Cup events.
The LMP2 class also sees another increase in 2025 with all 12 of the entries in the class committed for the full WeatherTech Championship season. Pratt Miller Motorsports will be joining the LMP2 field in 2025.
As previously announced, Paul Miller Racing will expand from one to two GTD PRO cars in 2025 alongside established two-car programs from Corvette Racing by Pratt Miller Motorsports and Ford Multimatic Motorsports. Pfaff Motorsports, Vasser Sullivan Racing and AO Racing also return with single-car efforts for the full WeatherTech Championship slate. Automobili Lamborghini will have a single-car effort for the Michelin Endurance Cup events.
The WeatherTech Championship’s longtime most populous class, GTD, remains that way in 2025 with 16 full-season entries. Full-season, one-car programs are planned for AWA, Conquest Racing, series newcomers DXDT Racing, Forte Racing, Gradient Racing, Inception Racing, Korthoff Competition Motors, Turner Motorsport, van der Steur Racing – stepping up from the IMSA Michelin Pilot Challenge – Vasser Sullivan Racing, Wayne Taylor Racing, Winward Racing, Wright Motorsports, DragonSpeed, Heart of Racing Team and Triarsi Competizione.
Additional Michelin Endurance Cup teams will include AF Corse with a pair of entries, Triarsi Competizione, Iron Dames and Lone Star Racing.